Security

Firo, Monero, and Zcash are all privacy coins, but they use clearly different approaches to privacy. Monero mainly relies on RingCT and ring signatures to hide transaction information. Zcash uses zk-SNARKs zero-knowledge proofs to enable anonymous transactions, while Firo adopts the Lelantus Spark anonymity pool model and Dandelion++ network-layer privacy mechanism. Compared with Monero and Zcash, Firo places greater emphasis on a privacy structure that does not require a trusted setup and on the ability to expand into confidential assets. Together, the three have helped advance private finance and anonymous payments in Web3.

Firo (FIRO) is a cryptocurrency centered on on-chain privacy protection. It uses the Lelantus Spark protocol to hide transaction senders, recipients, and amounts, while combining Dandelion++ network-layer anonymity technology to reduce the risk of tracing transaction origins. Unlike traditional public blockchains, Firo emphasizes a privacy model that does not require a trusted setup and strengthens network security through a hybrid PoW and masternode architecture.

Q-Day, or Quantum Threat Day, refers to the point at which quantum computing is sufficiently advanced to present real-world systemic risks to mainstream public key cryptography. This article outlines key concepts including qubits, superposition, entanglement, and error correction. Leveraging public resources such as Project Eleven’s "The Quantum Threat to Blockchains 2026 Report" and the latest academic research, it objectively examines on-chain ECDSA/secp256k1 exposure, evolving resource estimates, and the challenges associated with post-quantum migration.

With the ongoing expansion of the Bitcoin ecosystem, companies are shifting their focus beyond mining returns to also invest in network security and educational initiatives. This article explores the origins and core mission of the MARA Foundation, and examines how it advances Bitcoin’s long-term growth by providing funding and resources.

The privacy protocol Umbra temporarily closed its front-end website after hackers exploited its funds, prompting renewed debate within the marketplace about the extent of controllability in decentralized systems.

Drawing on the large-scale Bybit thefts of 2025–2026, the latest findings from Chainalysis and TRM Labs, the rollout of Hong Kong’s stablecoin licensing, and ongoing MiCA regulatory progress, this article offers a comprehensive breakdown of Private Key management, Approval and Signature practices, DeFi protocol filtering, and AI-driven phishing defenses. It delivers a clear, actionable on-chain Assets security checklist and emergency response procedures tailored for everyday users.

The Aave crisis has prompted a coordinated rescue across the DeFi sector. This article breaks down DeFi United’s funding structure, risk transmission mechanisms, and governance challenges, examining whether regular users will end up shouldering the final burden.

Arbitrum has frozen around $72 million in hacker assets, igniting debate over the boundaries between decentralization and governance. This article examines the reconstruction of DeFi trust structures through the lens of the Kelp DAO attack, cross-chain risks, on-chain governance mechanisms, and marketplace reactions.

DeFi has suffered losses exceeding $600 million in the past three weeks, as the Kelp DAO incident set off a liquidity chain reaction, driving TVL down to its lowest point in a year. This article breaks down risk transmission, structural challenges, and the broader impact on the industry.

In April 2026, the KelpDAO Bridge was attacked, with the attacker using abnormally minted rsETH as collateral on Aave to borrow a significant amount of WETH. This led to roughly $200 million in bad debt discussions and liquidity stress. This article provides an objective review of the event sequence and structural takeaways from the perspectives of mechanism, marketplace response, and governance framework.

Since 2026, DeFi security incidents have demonstrated concurrent patterns involving protocol vulnerabilities, front-end hijacking, and approval phishing. Drawing on this year's notable security cases, this article provides a systematic overview of Wallet layering, approval management, signature verification, and emergency response procedures, enabling regular users to build a practical and reusable on-chain security risk control system.

To strengthen blockchain application security, the Ethereum Foundation has introduced a new audit grant program. Through financial support and partnerships with professional institutions, the program reduces the cost threshold for Developers to perform security audits. In this article, you'll learn how the program works, the criteria for participation, and its broader implications for the crypto industry.

CoW Swap has suspended its services following a DNS hijacking incident targeting its frontend website. While the core protocol remains unaffected, this event underscores the persistent security risks facing DeFi frontends. In this article, we will examine the attack mechanism, the scope of its impact, and recommended preventive strategies.

Recently, an address contamination attack has targeted Squads multi-signature Wallet users. While no Assets have been lost, the attack could mislead users through interface manipulation and prompt incorrect actions.

With the ongoing growth of the Solana ecosystem, security concerns are becoming more critical. In response, the Solana Foundation has launched several new security programs, such as the STRIDE security framework and the SIRN incident response network. Additionally, developers are being offered security tools and support to strengthen the ecosystem's overall defense and transparency.